operated by Max Robinson and
dedicated to passing on and preserving
knowledge of vacuum tube circuits and techniques.
Keep the electrons flowing and the tubes glowing.
JOIN NOW!Join the Fun with Tubes discussion group.Now all of you who have been exchanging email messages with me can communicate with each other directly. To subscribe send an email to funwithtubes-subscribe@yahoogroups.com See you on the list. |
The people who run the website EE Web have
interviewed me and written a very
nice article. Here is the link.
EE Web article.
An Observation.
If I worked on radios the same way doctors worked on people when ever a capacitor, resistor, or tube, failed I would just take it out and throw it away. Yet the radio would be expected to work as well as when it was new. So far I am down my tonsils, adenoids, about one and a half feet of large intestine, and a gall bladder. My power output is down and my distortion percentage is up.
It's called Fun With Tran-sisters. If you would like to tinker with electronics But you would rather not poke around among High voltages, check it out. |
New!Something new after a long time.Transmission Lines and SWR Some of what's on this page may surprise long time hams. Tube Cross-reference and Selection Guide. Here are several tone control circuits with frequency response curves. Practical Tone Control Circuits. Pll Frequency control for AM band receivers New information and better graphs on The effects on coupling in IF transformers This page is linked from other pages and Will never be linked directly from this page. Modify a Heathkit IG-18 sine/square wave generator to get 0.015% distortion. A 50 watt per channel ultra linear amplifier using EL34s. |
Attention: All who are blind. The menu below was designed to be red by the sighted. It is arranged in three columns and is meant to be red down each column. Screen readers if left to themselves will reed it across each row. Red that way it doesn't make much sense and you won't know what goes with what. In the past I have maintained a separate index page for the blind but I have always felt that it is rather like being sent to the back of the bus. For those who need them here are instructions on how to read a table under your own control. 1. Let JAWS read until you hear table with 3 columns and 36 rows. Note. The number of rows may change over time. 2. Stop JAWS and use up and down arrows to set it on the entry in the upper left cell which is The Basic Stuff. 3 from this point you can use alt, control, and the arrow keys to move in any direction around the table.
I have a master's degree in electrical engineering from the University of Florida 1966. My early EE classes covered vacuum tubes so I know what I am talking about and doing. If you have any questions or suggestions feel free to email me.
On five occasions I have received emails from people seeming to be asking legitimate questions. When I attempt to answer them I get back one of those "Mail System Error" messages saying that my email address has been blocked by the sender. Four of the five have been from AOL users. Some anti spamming programs are quite strict and maybe you forgot to enter my address as "allowed". Check your anti spam list to be sure my reply will be given to you instead of being bounced back to me.
On the other hand maybe this is someone's idea of juvenile fun. No doubt the people who have done this (you know who you are) think this is very funny. To me it's just a minor annoyance. Even though it's a small thing I could do without it. Just because you're not having fun don't spoil it for the rest of us.
This site begun March 14, 2001
This page last updated May 7, 2012.
Web ring has been removed because it was hijacking browsers away from this site into the ring. The ring has been rung.
What do I need to have fun with tubes?
Click here for the answer.
Everything you always wanted to know about
vacuum tubes but didn't know who to ask.
Ask Tube Man.
Would you like to tinker around with tubes but don't know what to do? Want to fix up that radio that belonged to your great-grandfather but don't know where to start? Are you experienced in working with tubes but you just came across a problem which has you stumped? Tube Man knows all and tells all. Just click on the super hero's picture to email a question to him. See questions submitted to Tube Man and his answers.
Who and What.
This web site is owned and operated, as a hobby, by Max Robinson. As time goes by I will post tutorials on the fundamentals of electricity and electronics, interesting circuits you can build with vacuum tubes and op amps, and I will share some of my experiences restoring antique radios and early electric phonographs.
If I Don't Answer...
I scrupulously answer all emails sent to me. If you send me one and you don't hear from me in a reasonable amount of time maybe something went wrong.
My Favorite things.
Gramophones, Victrolas, etc.
Please come back and visit again!